Numerical Evaluation of Stiffening Effect of Tubular Joints
Publication: Journal of Structural Engineering
Volume 110, Issue 2
Abstract
Stiffening effect on the X‐type welded tubular joint is evaluated by a numerical procedure. Tubular joints with three kinds of stiffeners are analyzed by finite element technique using an elasto‐plastic isoparametric thick shell element. Two parameters are introduced to the evaluation of the stiffening effect; they are a mean equivalent plastic strain increment and a plastic work increment per unit volume. The parameters are calculated in the three cases of the stiffening types, and are compared with the experimental results prepared by the writers. It is concluded both of them are effective, and the former is recommendable. The calculation is stood on a static load condition, nevertheless the results can be applied to a fatigue problem because the fatigue resistance of the stiffened joint is in proportion to its static strength. Finite element analysis is also applied to the estimation of an optimum shape of the st.
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Information & Authors
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Published In
Journal of Structural Engineering
Volume 110 • Issue 2 • February 1984
Pages: 316 - 327
Copyright
Copyright © 1984 ASCE.
History
Published online: Feb 1, 1984
Published in print: Feb 1984
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